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Our family is dedicated to protecting yours

As local family owned business, Keystone Alarm Services has been dedicated to keeping the families and businesses of South Central Pennsylvania safe for over 20 years.  From alarms to cameras to access control and more, we have what you need.


It's easy to get a free, no-pressure estimate in our Hanover showroom or onsite at your home or business.  Call Keystone at (717) 632-9961.



With great Honeywell brand equipment, personal service and reasonable prices, it's no wonder our residential customers stay with us year after year.


Get yours today

We keep you safe

Small business services

You need protection that fits your goals and your budget.  With custom designed systems we can meet your unique  business needs better than our big competitors.


Find out how



You face challenges every day.  Keeping your people and building safe should not be one of them.  We offer solutions that give you the functionality you hope for at a price you can afford.


Let us help

We keep your property secure

Call us today


Visit us at

535 Carlisle St,  Hanover PA 




It's all about protecting, controlling and monitoring your processes, product and personnel.  We make it easier with professional installation and great service.


Solve the Problem

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PA License # PA020037